"It's very important for us to solve the Odom case," said Hernando County Sheriff's spokesperson Denise Moloney, "But as I said yesterday, we don't know if there's anything in there and if there is, if it's related to this case or if it's not. We don't know."

In their watery search for clues, the law enforcement dive teams have a tough task. Just how tough? 10 News consulted with Michael Jones, a local dive instructor with 40 years experience.

"It's like looking for a needle in a haystack," says Jones. "You would have to be right over the top of anything in there to find it."

With the OK from investigators, 10 News asked Jones and his partner from Aquatic Adventures of Florida to take an underwater camera into Lake Jovita.

The video shows heavy vegetation towards shore and in deeper water the visibility is poor. And Jones says if you stir up the bottom silt-- you can't see a thing.

"I feel for these guys trying to find anything. The growth would make it very difficult and the visibility would make it even worse," he said after diving in the lake.

And indeed, at about 2 p.m. Wednesday, the law enforcement dive teams called it quits and packed up their gear. According to the Hernando Sheriff's Office, "after an exhaustive search" the divers found nothing.